Every version of Phineas and Ferb — the films & series, compared across media.
Phineas and Ferb began as a TV series following two inventive stepbrothers who spend every summer day building something extraordinary — much to the frustration of their sister Candace, who tries to expose them, while their pet platypus pursues a secret life of his own. That world of suburban invention and family chaos has since expanded into films, taking its characters from an alternate dimension under totalitarian rule to the far reaches of the galaxy.
Film
Phineas and Ferb the Movie: Candace Against the Universe
Phineas and Ferb travel across the galaxy to rescue Candace, abducted by aliens to a utopia free of her brothers.
Film
Phineas and Ferb The Movie: Across the 2nd Dimension
Trapped in an alternate dimension ruled by evil Doofenshmirtz, Phineas and Ferb learn their platypus Perry is a secret agent.
No — Phineas and Ferb originated as an animated TV series in 2007, following two stepbrothers through endless summer adventures. The films grew out of that series rather than from a literary source.
There are two films: Phineas and Ferb The Movie: Across the 2nd Dimension (2011) and Phineas and Ferb the Movie: Candace Against the Universe (2020), both expanding on the world of the original TV series.
Start with the original Phineas and Ferb TV series (2007), which establishes the characters and their world; the two films build on that foundation and are best enjoyed with that context.